[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjEK1kgjBhB4IZVpPLc02qQXMp4CX_FQxbYDsJ_SXPFo":3,"g5a-risk:CVE-2023-25725":182},{"success":4,"data":5,"meta":179},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":34,"epssPercentile":27,"epssTimeSeries":35,"severity":36,"affectedProducts":37,"affectedProductsCount":50,"references":51,"referencesCount":88,"weaknesses":89,"weaknessesCount":98,"isActivelyExploited":99,"cisaInfo":27,"otxData":27,"relatedBlogPosts":100,"seoMetadata":101,"configurations":126,"relatedVendorCves":163,"notableEvents":164},"CVE-2023-25725","What is CVE-2023-25725?","HAProxy before 2.7.3 may allow a bypass of access control because HTTP\u002F1 headers are inadvertently lost in some situations, aka \"request smuggling.\" The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP\u002F1.0 and HTTP\u002F1.1. For HTTP\u002F2 and HTTP\u002F3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.","HAProxy before 2.7.3 may allow a bypass of access control because HTTP\u002F1 headers are inadvertently lost in some situations, aka \"request smuggling.\" The HTTP...","2023-02-14T19:15:11.53","2025-03-20T20:15:29.773",9.1,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":27,"CVSSMetricV40":27},[16,30],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH","CRITICAL",null,3.9,5.2,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":28,"ImpactScore":29},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},0.05448,[34,34,34,34,34,34,34],"Critical",[38,42,47],{"vendor":39,"product":39,"version":40,"criteria":41,"vulnerable":4},"haproxy","*","cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",{"vendor":43,"product":44,"version":45,"criteria":46,"vulnerable":4},"debian","debian_linux","10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",{"vendor":43,"product":44,"version":48,"criteria":49,"vulnerable":4},"11.0","cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",3,[52,56,62,66,69,72,76,78,80,82,84,86],{"url":53,"source":54,"tags":55},"https:\u002F\u002Fgit.haproxy.org\u002F?p=haproxy-2.7.git%3Ba=commit%3Bh=a0e561ad7f29ed50c473f5a9da664267b60d1112","Haproxy",[],{"url":57,"source":58,"tags":59},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2023\u002F02\u002Fmsg00012.html","Debian",[60,61],"Mailing List","Third Party Advisory",{"url":63,"source":64,"tags":65},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002FFPTJQHKUEU2PQ7RWFUYAFLAD4STEIKHU\u002F","Fedoraproject",[],{"url":67,"source":64,"tags":68},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002FJM5NCIBTHYDTLPY2UNC4HO2VAHHE6CJG\u002F",[],{"url":70,"source":58,"tags":71},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2023\u002Fdsa-5348",[61],{"url":73,"source":54,"tags":74},"https:\u002F\u002Fwww.haproxy.org\u002F",[75],"Product",{"url":53,"source":54,"tags":77},[],{"url":57,"source":58,"tags":79},[60,61],{"url":63,"source":64,"tags":81},[],{"url":67,"source":64,"tags":83},[],{"url":70,"source":58,"tags":85},[61],{"url":73,"source":54,"tags":87},[75],12,[90],{"id":91,"name":92,"description":93,"extendedDescription":94,"status":95,"abstraction":96,"structure":97},"CWE-444","Inconsistent Interpretation of HTTP Requests ('HTTP Request\u002FResponse Smuggling')","The product acts as an intermediary HTTP agent\n         (such as a proxy or firewall) in the data flow between two\n         entities such as a client and server, but it does not\n         interpret malformed HTTP requests or responses in ways that\n         are consistent with how the messages will be processed by\n         those entities that are at the ultimate destination.","HTTP requests or responses (\"messages\") can be\n\t   malformed or unexpected in ways that cause web servers or\n\t   clients to interpret the messages in different ways than\n\t   intermediary HTTP agents such as load balancers, reverse\n\t   proxies, web caching proxies, application firewalls,\n\t   etc. For example, an adversary may be able to add duplicate\n\t   or different header fields that a client or server might\n\t   interpret as one set of messages, whereas the intermediary\n\t   might interpret the same sequence of bytes as a different\n\t   set of messages. For example, discrepancies can arise in\n\t   how to handle duplicate headers like two Transfer-encoding\n\t   (TE) or two Content-length (CL), or the malicious HTTP\n\t   message will have different headers for TE and\n\t   CL.\nThe inconsistent parsing and interpretation of messages\n\t   can allow the adversary to \"smuggle\" a message to the\n\t   client\u002Fserver without the intermediary being aware of it.\nThis weakness is usually the result of the usage\n\t   of outdated or incompatible HTTP protocol versions in the\n\t   HTTP agents.","Incomplete","Base","Simple",1,false,[],{"title":102,"metaDescription":103,"keywords":104,"canonicalUrl":105,"structuredData":106},"What is CVE-2023-25725? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-25725, a critical severity cyber security vulnerability from 2023. HAProxy before 2.7.3 may allow a bypass of access contr...","CVE-2023-25725, CVE-2023-25725 vulnerability, CVE-2023-25725 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2023, CVSS score, exploit, patch, remediation, haproxy security, debian security, haproxy vulnerability, debian_linux vulnerability","\u002Fwhat-is\u002Fcve-2023-25725",{"@context":107,"@type":108,"headline":102,"description":103,"datePublished":10,"dateModified":11,"author":109,"publisher":113,"about":117,"mainEntityOfPage":121,"articleSection":124,"keywords":125},"https:\u002F\u002Fschema.org","TechArticle",{"@type":110,"name":111,"url":112},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":110,"name":111,"url":112,"logo":114},{"@type":115,"url":116},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":118,"name":6,"description":119,"additionalType":120},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":122,"@id":123},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-25725","Cybersecurity","CVE-2023-25725, CVE-2023-25725 vulnerability, CVE-2023-25725 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[127,155],{"Operator":27,"Negate":27,"Nodes":128},[129],{"Operator":130,"Negate":27,"CPEMatch":131},"OR",[132,135,139,143,147,151],{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":133,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":134,"VersionEndIncluding":27},"5F291108-797E-4521-9309-9EB636C7D67E","2.0.31",{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":136,"VersionStartExcluding":27,"VersionStartIncluding":137,"VersionEndExcluding":138,"VersionEndIncluding":27},"7D2C9AFB-4C4F-4641-B5B2-588D486EE0A9","2.1.0","2.2.29",{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":140,"VersionStartExcluding":27,"VersionStartIncluding":141,"VersionEndExcluding":142,"VersionEndIncluding":27},"6D101B93-F6E0-450C-B72B-477170BE6976","2.3.0","2.4.22",{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":144,"VersionStartExcluding":27,"VersionStartIncluding":145,"VersionEndExcluding":146,"VersionEndIncluding":27},"68F54E28-B550-4CBF-9856-70A8596F3C98","2.5.0","2.5.12",{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":148,"VersionStartExcluding":27,"VersionStartIncluding":149,"VersionEndExcluding":150,"VersionEndIncluding":27},"89FA706D-9EC7-4484-A5A4-4CB97B5194AB","2.6.0","2.6.9",{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":152,"VersionStartExcluding":27,"VersionStartIncluding":153,"VersionEndExcluding":154,"VersionEndIncluding":27},"32B5DC1B-FD58-4050-8D84-31A381B89E90","2.7.0","2.7.3",{"Operator":27,"Negate":27,"Nodes":156},[157],{"Operator":130,"Negate":27,"CPEMatch":158},[159,161],{"Vulnerable":4,"Criteria":46,"MatchCriteriaID":160,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":162,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"FA6FEEC2-9F11-4643-8827-749718254FED",[],[165,172],{"id":166,"eventType":167,"eventTime":168,"details":169,"label":170,"color":171},"72ef0e76-5010-4676-b051-509f2e2c22f5","LOW_EPSS_DELTA","2025-06-11T10:10:21.21296+00:00","Daily EPSS score decreased by 0.275 on 2023-12-30","EPSS Score Decreased","green",{"id":173,"eventType":174,"eventTime":175,"details":176,"label":177,"color":178},"8106ce42-41d2-4614-acd4-233e7d82b197","HIGH_EPSS_DELTA","2025-11-19T04:05:21.43155+00:00","Daily EPSS score increased by 0.255 on 2023-12-30","EPSS Score Increased","red",{"lastModified":11,"cacheTime":180,"version":181},1792264462628,"2.0",{"score":183,"band":184,"action":185,"scoredAt":186},52,"Medium","Plan remediation","2026-10-16T06:57:08.89982+00:00"]